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A Highly Stretchable and Autonomous Self‐Healing Polymer Based on Combination of Pt···Pt and π–π Interactions
Author(s) -
Mei JinFeng,
Jia XiaoYong,
Lai JianCheng,
Sun Yang,
Li ChengHui,
Wu JunHua,
Cao Yi,
You XiaoZeng,
Bao Zhenan
Publication year - 2016
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201600428
Subject(s) - polydimethylsiloxane , self healing , polymer , materials science , platinum , self healing material , polymer chemistry , composite material , chemical engineering , chemistry , organic chemistry , pathology , engineering , catalysis , medicine , alternative medicine
A new self‐healing polymer has been obtained by incorporating a cyclometalated platinum(II) complex Pt(C ∧ N ∧ N)Cl (C ∧ N ∧ N = 6‐phenyl‐2,2′‐bipyridyl) into a polydimethylsiloxane (PDMS) backbone. The molecular interactions (a combination of Pt···Pt and π–π interactions) between cyclometalated platinum(II) complexes are strong enough to crosslink the linear PDMS polymer chains into an elastic film. The as prepared polymer can be stretched to over 20 times of its original length. When damaged, the polymer can be healed at room temperature without any healants or external stimuli. Moreover, the self‐healing is insensitive to surface aging. This work represents the first example where the attractive metallophilic interactions are utilized to design self‐healing materials. Moreover, our results suggest that the stretchability and self‐healing properties can be obtained simultaneously without any conflict by optimizing the strength of crosslinking interactions.